Merge sin(a), cos(a) into one instruction. TODO: Implement for ARM and MIPS.

runtime/vm/assembler_ia32.cc

Index: runtime/vm/assembler_ia32.cc
===================================================================
--- runtime/vm/assembler_ia32.cc	(revision 30802)
+++ runtime/vm/assembler_ia32.cc	(working copy)
@@ -1259,6 +1259,13 @@
 }
 
 
+void Assembler::fsincos() {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0xD9);
+  EmitUint8(0xFB);
+}
+
+
 void Assembler::fptan() {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0xD9);